X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=hash.h;h=9ff67613330ecc8107aee1396799fedc9edc3b26;hb=669ba89e52945e26528d498221c8ecd576b10d2d;hp=804fcdac12ceb4e302b25a63a48b0bfb8f7d0b35;hpb=a2ec48bb6b799e7a48f041ed34d6547f45509493;p=platform%2Fupstream%2Fbtrfs-progs.git

diff --git a/hash.h b/hash.h
index 804fcda..9ff6761 100644
--- a/hash.h
+++ b/hash.h
@@ -16,12 +16,23 @@
  * Boston, MA 021110-1307, USA.
  */
 
-#ifndef __HASH__
-#define __HASH__
+#ifndef __BTRFS_HASH_H__
+#define __BTRFS_HASH_H__
+
 #include "crc32c.h"
 
 static inline u64 btrfs_name_hash(const char *name, int len)
 {
 	return crc32c((u32)~1, name, len);
 }
+
+/*
+ * Figure the key offset of an extended inode ref
+ */
+static inline u64 btrfs_extref_hash(u64 parent_objectid, const char *name,
+				    int len)
+{
+	return (u64)btrfs_crc32c(parent_objectid, name, len);
+}
+
 #endif